<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
<html lang="en"  xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1 th:text="${showtext}"></h1>
    <h1 th:utext="${showtext}"></h1>


    <span th:if="${ 19>20}">
        为假
    </span>
    <span th:unless="${ 19>20}">
        为真
    </span>
    <img src="image/4.png"/>
    <img th:src="@{image/3.png}"/>
    <a href="showStudent">链接</a>
</body>
</html>